so anyway i try to overclock my memory on my 8800gts it has samsung it is only stable at 1080 when temps get above 54C and 1242 stable anytime else this is with volt mod, my question is do i do 770/1960/1240 or 865/2210/1080
Printable View
so anyway i try to overclock my memory on my 8800gts it has samsung it is only stable at 1080 when temps get above 54C and 1242 stable anytime else this is with volt mod, my question is do i do 770/1960/1240 or 865/2210/1080
Got my MSI 512 gts in today... So far, im not very impressed. The added memory from my 320 gts solved a crysis problem. On detailed parts it used to lock up for 1/2 a second while the hdd was going crazy, i guess 320 aint enough. But im not getting much better fps, and its louder. Around 30fps in crysis where i used to get 25. The clocks are much higher, but it dosent do as much clock for clock. Runs alot cooler, but it just locks up, even at stock clocks when it gets around 70C. My G80 core started to throw artifacts when it hit the high 80's but it kept chuggin, and if you cool it they go away.
Samsung chips, didnt touch voltages yet, but ill see if i can find some 10 turn pots and mod it later today. The highest i got it stable on stock volts is 785/1560/1130.
I replaced the 3" layer of crap with AS5, and the temps are down about 3C to 60C full load on the fuzzy cube, 24C ambients.
I know i have a few 20k pots, would that work out fine on the mem? Or would it be a whole lotta overvoltage even turned way down? Ill probably mess around with a resistor substitution box and see what i want my range to be anyways.
Hmmm...
http://www.techpowerup.com/gpuz/4xqbw/
Is that good?
ZOMGVTEK,
How is the stability at 950MHz/2325MHz/DDR-2650?
Nonexistent,Quote:
Originally Posted by largon
im on stock volts... lol
I was just messing around, and this one sure wants to go higher. My G80 just started to hit a wall. Im going to see what i can get stable on about 1.3vcore.
well i have a Msi 8800gts and i broke my 8800gts bfg and the almost clock about the same cept i get 865/2160/1080 and the bfg 850/2100/1080 idk whats up with the memory it seems to be unstable after a certain temp
Hmmm...
Even at 1.500Vidle, i cant get it to be stable for even a second at 900/2200.
I guess back down the shaders....
EDIT: It takes 1.40125vIDLE to do 875/1150, around 70.0 ohms additional resistance. Anything higher just starts to take WAYYY too much voltage.
Moving on to the memory...
EDIT: 3,785 Ohms on the mem gets me 2.250Vload on the mem, and im stable at 1225...
Now, time to put them both togther and hardclock the new settings.
Ok,
The GPU is locked via a resistor at about 1.43V load, im trying to find a 1kohm trimmer around the house.
The Mem is at 2.250V idle, 2.248V load. Currently stable at 2225. Im going to be upping this slowly and benchmarking. Currently my ambients are 28.5ºC, so thats a hell of a stress test on the stock cooler.
BIOS modded so the fan ramps, reaches 100% at 58ºC, its running the fuzzy cube at 60-62ºC right now at 850/2150/1200.
More to come, maybie some pics.
Hmmm...
So, my 3d mark 06 score went from 17,691 with no vmods to 13,768.
It runs faster for about 1/2 a second, then it really slows down, and picks back up. Average is apparently lower. Whats up with that?
the fuzzy cube fps is lower as well. Its stable, but slower than before, at higher clocks?
At the same clocks it used to run at before the volt mod, it is now significantly slower.
What would cause this? Too much voltage? I will back down the voltages and see if that helps, and if it dosent, back to shock it is...
*sigh*
Ok,
I backed the mem voltage down to 2.053V idle, 2.050V load. Its still stable at 1230.
Im going to back the core voltage down, it looks like 1.450 is way too much...
Ok, got it down to 1.275V idle GPU, and 2.050V idle MEM. ATI tool is showing increased framerates now, but i get LOWER scores in 3dm06 still...
Only about 500 points lower, but why does a vmod and overclocking give me a lower score?
1. it may be throtling due to temps?
2.reinstall your vid drivers?
and in what area are you losing points compared to stock runs?
Doing 841 core, 2102 shader, 2205 mem right now on stock cooler and stock volts :D .
I love my card ...
yea when i run 3dmark apps they are so low in score my old 8800gts g80 would beat it, idk whats up, but when i had my old 8800gts g92 bfg i got about 17000, but after spend hours trying to find my highest stable and i fount it at 850/2160/1215 all games run great even crysis, i got 29.9 average on 1680x1050 very high in everything in xp, i like to note run 174.74 drivers are the best i gained about 2-3fps on the gpu test from goin from 169 drivers
I figgured out most of the issues. I think im at a little too high clocks or voltages for the stock cooler, running at 850/2100/1250 right now. I think 1.3ish V gpu, and 1.050V mem load.
The GPU core slowdown temp somehow got down to 80C from 100, and aparently it throttles down before it hits that? It was at around 70C, so thats not 80, but alright... it works fine when its set to 100C.
Im getting better framerates in crysis, UT3... etc. but when i compare my bench at the max stable non vmodded G92 GTS to after i vmodded it with higher clocks its about 500 points worse now in 3DM06.
Applications preform better, but 3DM06 says its worse? Odd...
I think 900 core is not possible with the stockcooler other than in artic conditions for more than just a single benchmark.
850 is quite easy and should be within reach with the stockcooler.
The reason for your bad score is most likely throttling, just go easy on volts with the stockcooler.
If you want to run this card over 850 core, you should watercool it.
Mine went from 59ºC idle to 32ºC idle with watercooling, a nice improvement i'd say.
Yea, im going to back down the volts a bit, hopefully i can get them lower and still run at what im at now.Quote:
Originally Posted by Zeus
And with my modded fan profile and AS5, i idle at 45ºC in about 24ºC ambients. The fan is around 45% at idle.
This is making no sense.
At the exact same speeds i was running 3DM06, i now get a 15,500 where i got a 17,600 before the Vmod...
What the hell happened?
Im about ready to just rip this stuff off and forget about it.
back off on the mem clock and volts i could get it to 1250 but i had it keep artifacting terrible cuz the volts were to high run right untill i set the volts so it work for 1215 and havent had any problem now its been a while since i had a 8800gts work right and not crash when im playing cryis im so happy:) but my clocks are 850/2160/1215 i just did a 3dmark06 it was 17200, with a
q6600@3600,
PS: CAN SOMEONE PLZ HELP ME FIX MY BFG 8800GTS I WOULD LOVE TO SLI I WOULD POST PICTURES I WOULD REALLY APPRICATE THE HELP
I also have a Q6600 running at 3.6, and at much lower clocks i get a 17800, with no vmods. I just pulled the stuff off and its running back to where it was.
I need to get a 50k trimmer for the mem, my 20k at 20k put the mem around 2.01. And i didnt even have a trimmer soldered onto the gpu, i had to run clip leads to a big 20 turn 10k, wich got tricky to manage near 1.2+v.
I'm running my evga 8800gts 512mb at @779/1098/1913 and it hits 75c tops with 60% fan. Should i bother volt modding if i dont plan on changing around the cooling? And those clocks are all 10 away from artifacts.
yea im using a 50k its more persise, and to the other guy 75C is kinda high set your fan to 75% thats what i set my fan and idk i only got to 72C with the volt mod at 1.4before i got a ARCTIC COOLING Accelero S1 VGA Cooler - Retail i never go above 58C but anway u proubly can vmod your ram if u have samsung should be able to get to 1200 and report back to me when u set it to 75% try open case
I'm running 1,30V idle, 1,35V load at 848/2100/1100 (samsung mem- No vmod on memory) 24/7.
So what is a "safe" voltage to run these cards at? I am hitting 860/2100/2250 w/ 1.4 Vgpu loaded on an mcw60r. I just want to know how much more I should turn it up.
So, i got a thermalright hr-03 plus.
And then about now found out that people say the cooler designed for 8800 series cards will not cool my 8800 gts 512...
UGH.
So, what makes it not fit? Do i want to get the GT version, or can i mod the plus version easy?